I've had similar symptoms (some players can connect, others can't) problem in the past when I didn't have the full range of 7000-7100 forwarded. Unfortunately I don't know enough about it to speculate 'why'
Everquest is a registered trademark of Daybreak Game Company LLC.
EQEmulator is not associated or affiliated in any way with Daybreak Game Company LLC.
Except where otherwise noted, this site is licensed under a Creative Commons License.